Steam-trap



(No Mndel.)

A. L. FISH.

STEAM TRAP.

No. 269,656. Patented Dec.Z6, 1882. 'F'wisl.

WITNESSES INVENTOR MW, KWMW L Ti 9% m-"MM,

ATTORNEYS the valve, is inclosed in such body.

NITED STATES ATENT Orrica.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 269,656, dated December 26, 1882.

(No model.)

To all whom it may concern Be it known that I, ARTHUR L. FisH, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California,have invented newand useful Improvements in Steain-Traps, of which the following is a specification.

This invention relates to devices for emptying steam-traps of the water of condensation; and it consists in the combination, with the trap-body having an inlet-pipe, of a float having an open mouth at its top, a hollow valvestem, and ahollow valve-chamber having ports, said stem and chamber being connected with the open-mouthed float for receiving the surplus water from the float and discharging it through the valve-stem, the construction and arrangement being such that when the water reaches the proper level in the trap-body it overflows into the float and causes it to sink by gravity, whereby the valve is opened and the water permitted to escape from the float, so that when the float is emptied it rises to an upper or normal position, thereby closing the valve.

This invention is illustrated in theaccompanying drawings, in which Figure 1 represents a vertical cross-section. Fig. 2 is a horizontal section. Fig. 3 is a vertical cross-section on the line 00 m, Fig. 1.

Similar letters indicate corresponding parts.

The letter A designates the trap-body; B, the float; C, the float-arm; D, the valve-stem, and E the valve-chamber.

The trap-bodyA is made of any usual or suit-able form, it being provided with an inletpipe, F, at the top, and the float, together with The float is made of cast-iron or other suitable material, with an open mouth, or in form of an openmouthed vessel, and the arm 0 projects laterally therefrom. This float-arm is hollow, and is connected to the valve-chamber E on the outer side of the latter, it being open at both ends. The valvechamber E is annular in shape, and is fitted ou' the stem D in a suitable manner to rock or oscillate thereon, while both the stem and the chamber are provided with ports g or g of approximately similar size and shape. The valve-stem D extends through the bottom of the trap-body or through either of its sides or ends, and it is open at the outer end, where it discharges, it being closed at the inner end.

The motion of the valve-chamber Eon the stem is regulated by a stop, h, which also serves to regulate the extreme positions of the float B, and, assuming that the float is in an upper position, when the water of condensation admitted to the trap-body reaches the proper level it overflows into the float and causes the latter to sink by gravity. When the float reaches its lowest position the valve-ports gg register with each other, they being suitably arranged for this purpose, and the water flowing from the float through its hollow arm into the valve-chamber is permitted to escape by way of the valve-stem. When, however, the float has been emptied sutficiently to regain its buoyancy, it rises to an upper position, in which the valve-ports are brought away from each other and the valve is closed.

The stop It, consists of a pin projecting from the valve-stem D, and working in a slot, h, formed in a hub concomitant to the valvechamber. In order to afford a substantial support to the float, the arm 0 is connected to it at a point above the bottom, and for the punpose of insuring the discharge of water from the float it is provided with a channel, 2 which extends from a point near the bottom of the float to the float-arm, the water being forced up through the channel by the pressure of the steam. The arm, however, can also be connected to the float at or near the bottom, in which case the channel i is omitted.

It will be perceived that by the construction herein described I obtain a balance-valve, which is favorable to the easy and correct working of the parts, and the same condition may be fulfilled by a slight modification in the form of the valve-as, for example, the stem D may be arranged to rotate, .leaving the chamber B stationary-and in that event the float is connected to the stem, and the chamber is provided with a means for discharging the water.

In some cases the float-arm may be omitted,- that is to say, the body of the float may be enlarged to practically include the arm in its area, and in that event said body is connected directly to the required part of the valve.

What I claim as new, and desire to secure by Letters Patent, is-- 1. In a steam-trap, the combination of the trap-body A, having an inlet-pipe, F, the float B, having an open mouth at its top for receiving: the water in the trap-body when it rises above a proper level, a hollow valvestem having ports, and a hollow valve-chamber having ports, and connected with the open-mouthed float for receiving the surplus water from the float and disehargingitthrough the "alve-stem, substantially as described.

In a steanrtrap, the eombination, with the trap-body A, having an in1et-pipe, F, the fixed hollow valve-stem D. having portsg, of the h01- low valve-ehamberE, having ports g, the float B, having an open mouth at its top to receive the water from the trap-body when it rises above the proper level, and a hollow float'arm. C, having one end opening' into the hollow valvechamber and the other end into the float for conveying: the water received in the latter to the valve-chamber and discharging it through the valve-stem, substantially as described.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

ARTHUR L. FISH.

Witnesses:

W. HAUFF, Gr ms. WAHLEns. 

